Automatic fire-window.



No. 776.948. PATENTBD DEO. 6, 1904. G. `SOHWING. & G. YUNKER. AUTOMATIC FIRE WINDOW.

APPLIOATION FILED .TUNE 1,1904.

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No. 776.948. PATENTED DEC. 6, 190%.

G. SOHWING da G. YUNKER.

AUTO MATIO FIRE WINDOW.

APPLICATION FILED .TUNE 1.1904.

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Patented December 6, 1904.

arENT OFFICE.

GEORGE SCHVVING AND G'OTTLIEB YUNKER, 0E NEWARK, NEW JERSEY, ASSIGNORS TO THE NEWARK GRNIUE AND SilYLlGltll VORKS, A COR- PORATION OF NEV JERSEY.

SPECIFICATION forming part of Letters Patent No. 776,948, dated December 6, 1904.

Application filed June l, 1904. Serial No. 210,650. (N model.)

To all whom. it muy cori/cern:

Be it known that we, Geenen Scnwnve and GoTrLIn YUNKER, citizens ol the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Automatic Eire-VVindows; and we do hereby declare the following to be a full, clear, and exact description of the inventioinsuch as willen- Io able others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying' drawings, and to numerals oit' reference marked thereon, which form a part or' this specification.

i5 This invention relates to lireproof windows,

and more particularly to means for automatically closing the same when subjected to heat, the objects of the invention being' to avoid the objections oi' pivoted or revolving windows zo and to apply heat-closing means to a doublehung Window or one comprising' upper and lower sashes which slide vertically; to apply independent closing means to each oi the sashes, whereby they operate independently 2 5 of each other; to secure an impervious closure at the upper part of the window, so as to etlectually prevent flames passing therethrough; to provide automatic lock or catch means for holding' the upper sash in closed position, so

3o that it cannot by any possibility fall away from the upper part of the window; to secure a simple and cheap construction and one which shall present a neat and pleasing' appearance, and to secure other advantages and results, some of which may be hereinafter referred to in connection with the description ofthe working parts. Y

The invention consists in the improved double-hung iireproof window and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth and finally embraced in the clauses of the claim.

Referring to the accompanying' drawings, in which like numerals of reference indicate corresponding' parts in each of the several iigures, Figure 1 is an inside elevation of a window ot' our improved construction, the lower sash being shown slid upward and the upper one drawn downward slightly below the lower sash and portions ol" the sashes and window- 5o frame being broken away to show the construction morc clearly. Fig. 2 is a vertical section of the window as upon line fr, Fig. l; and Eig. 3 is a horizontal cross-section on line y, Eig. 1, looking' upward against the bottom 55 ot' the two sashes. Fig. l is a detail View of a portion of the window-trame from the outside, showing' the recess or aperture to receive a certain gravity-catch.

.ln said drawings, l indicates a window- 6o `iframe of any construction suited to iire-windows, preferably oil'l sheet metal, as shown in the drawings, and oi. any well-known torination. Said 'frame provides at the inner faces of its upright sides channels 3 f1 tor the upper 65 and lower sashes 5 6 to run in, said sashes being' also formed ot' sheet metal with panes of g'lass 7 mounted therein. The said sashes,

it will be understood, are free to slide vertically, one past the other, from the top to the bottom of the window-frame, as is common in ordinary windows, the window-frame l providing' weight-pockets 8 9 for the weights l0 11, by which the said sashes are hung.

Coming now more particularly to the features oi' our invention, the lower sash 6 of the window is provided at its outer lateral edg'es and bottoni with a longitudinal groove or recess 12, and in said groove are arrang'ed the weight-chains 13 14, each extending' down- SO ward along a side ot' the sash and around its lower corner inward along the bottom edge to the center of the sash. The ends oit' said chains 13 14 are connected at said center of the bottom of the sash by a fusible link l5, said link S5 15 being slotted longitudinally, as at 16, to receive a bolt 17, secured to the bottoni oi the groove 12. It will thus be understood that under ordinary conditions the lower sash works like any other sash hung upon weights; 9o but when the said sash is push-ed upward or opened the fusible link 15 at the bottom thereof is exposed, so that it a current of heat or flame passes through the window said link will be melted. Because of the slot 16 obvi- 95 ously such melting would release both chains 13 14 from the sash, so that said sash would drop by its own weight to closed position.

The top of the sash 5 is also hung by weights in the usual manner, except that the said weights 11 are heavy enough to overbalance the sash and normally hold the saine upward in closed position. When it is desired to open the upper sash, the same is pulled downwardly by means of a chain 18, attached to the lower part of the sash, as at 19, said chain having links any one of which may be hooked over a pin 2O on the lower part of the window-frame to hold the upper sash in any desired position. In said chain 18 near its upper part is inserted afusible link 21, so that hif the sash were open the passage of heat through the window would melt said link 21, and the sash would then be instantly closed by its weights.

To prevent any possibility of the upper sash dropping from its closed position-as, for example, if the weight-chains were melted offwe provide at the lower part of the upper sash 5 a catch or look of any suitable construction adapted to automatically secure the upper sash when closed. Ve have shown for this purpose in the drawings a gravity-catch 22, comprising an elbow-shaped piece pivotally hung at the extremity of one arm to the lower part of the upper sash, as at 23, so as to swing at right angles to the plane of the sash and run in the channel 3 below the sash. The free arm 24 of the said catch normally slides upon the side wall of the channel; but when the sash reaches its closed position the extremity of said arm 24 passes through or falls into an aperture or recess 25 in said side wall of the channel and from which it must be released by the hand before the sash can be lowered. This construction of catch is advantageous in that it is simple and involves no springs or other parts liable to be put out of order` by lire. Obviously, however, any other form of catch might be employed, and it willfurthermore be understood that our invention could be applied to constructions of sashes and window -frames other than those particularly shown and described.

Having thus described the invention, what we claim as new is-- 1. In a window, the combination of a frame, a sliding sash therein longitudinally grooved at its side and bottom edges, sash-weights in said frame, and chains extending from said weights along the grooved edges of the sash and being fusibly connected to the sash in the said bottom groove thereof.

2. In a window, the combination of a frame, a sliding sash therein having its side and bottom edges longitudinally grooved, a fusible link in said bottom groove, a bolt fastening said link to the sash, sash-weights in said frame, and chains extending from said sashweights to the opposite ends of said link.

3. In a window, the combination with a frame, a sash sliding in said frame and weights normally tending to slide said sash upward, of a fusible link depending from the lower edge of said sash, a chain depending from said link, a pin upon the frame-sill adapted to receive the links of said chain to hold the window open, and an automatic catch adapted to positively hold said window closed.

4. In a window, the combination of a frame, a sash mounted therein and longitudinally grooved or recessed at its bottom and side edges, sash-weights in said frame and chains extending from said Weights along the grooved edges of said sash, and a fusible link connecting the ends of said chains at the bottom of the sash.

5. The combination with a window-frame, of a sash adapted to slide vertically in said frame, said sash being grooved at its bottom and side edges, a slotted fusible link arranged longitudinally in the said groove at the bottom of the sash, a bolt extending through said slotted link to connect it to the sash, weights arranged in said frame on opposite sides of the sash, and chains extending one from each weight to an end of the said link.

6. In a window, the combination with a vertically-sliding sash and means normally holding said sash in upper closed position, of a gravity-catch pivoted to the lower part of said sash and adapted to lie in the channel or runway thcrefor, the wall of said channel having a recess or aperture into which said catch falls when the sash is in a certain predetermined position` and means for holding said sash in open position.

7. In a window, the combination with a vertically-sliding sash and means normally holding said sash in upper closed position, of a gravity-catch pivoted to the lower part of said sash and adapted to lie in the channel or runway therefor, the wall of said channel having a recess or aperture into which said catch falls when the sash is in a certain predetermined position, and means for holding said sash in open position, said means being adapted to be released by exposure to heat.

In testimony that we claim the foregoing we have hereunto set our hands this 26th day of May, 1904.

GEORGE SCHWING. GOTTLIEB YUNKER.

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